Window-glass channel



Feb. 2 1926.

- E. w. M. BAILEY WINDOW GLASS CHANNEL Filed Sept. 2- 1921 UNITED STATES PATENT 0 FFIIVCE.

EDWIN w. M. BAILEY, OF AMESBURY, MASSACHUSETTS.

WINDOW-GLASS CHANNEL.

Application filed September 22, 1921 Serial No. 502,333.

To all whom it may concern:

Be it known that I, EDWIN W. M. BAILEY, a citizen of the United'States, and a resident of Amcsbury, county of Essex, State of Massachusetts, have invented an Improvement in lVindow-Glass Channels, of which the following is a specification.

This invention relatesto window glass holding and guiding devices, which are principally employed in automobile bodies where the glass is not set in a sliding frame,

' or sash, but has its edge portion mounted to slide in a channel-or groove.

More particularly, the invention relates to a specific form of the invention disclosed,

and generically, but not specifically claimed.

1n my prior Patent #1374629, dated Apr. 12, 1921, and to certain improvements on, or modifications of said form.

The present application, therefore, to a certain extent, relates to' matter divided out of the original application on which; said patentwasbased, which form of 'the original invention is now deemed most-practical, and it also-relates to certain improve ments 'on and modifications of such form.

In the development of the invention to what is now believed to be its most practical form, certain manufacturing difficulties were encountered, in producing this form of the invention rapidly, inlarge quantities and at a low cost, audit was considered that, in order to meet these requirements, the metal strips, of which the channel or guide was constructed, must be made by a rolling process. The construction produced inthis manner is uniform, and accurate adjustment at the time of installation, is usu ally necessary accordin to the particular thickness. of glass emp oyed, so that the glass will be firmly held and the force of frictional engagement of the guiding means with its glasswill be uniform under all conditions.

One of the objects of the present inven-' tion is to produce a form of the generic invention which may be made by a rolling process, and another object is to produce a construction having means whereby the force of frictional engagement with the glass may be accurately adjusted.

p I accomplish these, and other objects of the invention, in the manner hereinafter in approximately described and as illustrated panyingdrawing'in which:

Fig. 1 is a side elevation, partly in section, of a window casing provided with a wlndow glass channel embodying my invention.

F igQ 2 is transverse sectional view on a in the accoms somewhat enlarged scale, at line 22 of Fig. 1.

Fig. 3 is an edge view of the guiding strip.

Fig. 4. is a sectional view at line 14 of Fig. 3..

Figs. 5 and 6 are greatly enlarged sectional views, similar to Fig. 2, showing the extremes of adjustment of the guiding strip.

Flg. 7 is a similarly enlarged perspective view of one end of the strip.

As explained in said prior patent, the window glass holding and guiding means is formed from one or more strips of thin and somewhat resilient sheet metal, and is adapted to be secured to the bottoms of grooves or slots formed in the window casing, or directly to the surface of the casing.

In accordance with the present invention, the channel, proper, consists of a single strip of sheet metal, which is bent longitudinally U-form (.by passing the samethru a series mg rolls) to provide a transversely curved or concave intermediate, or bottom portion a, and two laterallyextending side portions 1) and 0, connecting portions. d and a being formed between the bottom and each side.

, face for engagement with the window glass.

As shown in Figs. 5 and 6, the rounded or transversely convex faces, provided by the beaded edges f and g for engagement with thesurfaces of the glass, project inward from the convergently disposed side portions to such an extent that, when the of suitably shaped formsheet oi glass is inserted thercbetwecn, its surfaces will be engaged by said surfaces only, and the glass will not be engaged at any other point by said side portions. The area of frictional engagement of the guiding strip with the glass will be reduced to a minimum, and, at the same time, the glass will be securely held against lateral movement and will be accurately guided in its sliding movement with a minimum of trio tional 1 stance.

As originally shaped in thoprocess oi iminufacture, the distance between the adjacent faces of the beaded edges f, g, is such that a sheet of glass, of the n'iaximum thiclc ness which is likely to he ei'i'iployed, will be resiliently engaged by the rounded faces of said beaded edges with a force which will permit :lree sliding movement of the glass on said "faces and, at the same time, will prevent rattling. also, as hereinafter described, the side port-ions may be set in closer proximity for glass of less thickness, so that the same force of frictional engagement may be secured for all conditions. In this connection, it is to be noted that on account of the transversely rounded edge portions, or beads provided for direct engagement with the glass, the area of the engaging surface, will be the same, whether the glass is thick or thin, as indicated in Figs. 5 and 6. Under all conditions, therefore, a yielding support for glass of all degrees of thickness likely to be employed, may be provided, which will accurately and smoothly guide the glass when raised or lowered.

The specific form of yielding engaging means for the edge of the glass, which I employ, consists of a single strip of resilient sheet metal, having a semi-circular bend in the middle thereof, which extends thruout its length to form a supporting member h and an overlying yielding member 1', which is approximately parallel thereto, for engaging the edge of the glass. Said edgeengagmg strip is secured to the convex, or inner side of the bottom a of the channel strip in the operation of forming the screw holes for the attachmentof the entire device to the casing; In performing this operation, holes are punched thru the bottom portion a, from the outer side inwardly, so as to form metal tongues, as m, which are forced thru holes j, formed in the support ing member h, and then bent back against the inner surface of the latter and clenched, so as to form a riveted connection between the bottom member a and supporting member h.

Apertures, as n, are formed in the engaging members i opposite each aperture 9', thru which the screws 0 may be passed in securing the strips to the casing, as described in said prior patent.

hen the channel strip is first placed in position on the casing its rounded or convert portions (Z, c are the only portions thereof which bear against the casing portion to which it is secured, as indicated in Fig. 5, and when the screws 0 are forced into the wood of the casing only to an extent Sullicient to hold the strip in firm contact with the casing, at this point, the headed edges 7, 9 will be separated by a distance which will be somewhat less than the thickness of a glass plate of the greatest thickness which is likely to be employed, so that the desired degree of frictional engagement will be socured thereliietween, for a glass plate of such thickness. In most instances, however, the glass will be of less thickness than this and it will be necessary to decrease the distance between the edges f and g, to secure the desired force of frictional engagement, so that the side portions l), 0, must be set in closer proximity.

To accomplish this result, the screws 0 will be forced inwardly, so as to press the middle portion of the bottom portion a towards the surface to which it is attached and thus reduce its ci'ni-avity or cause it to be spread out, the width of the casing groove in which it may be placed being suilicient to permit such action. As a result the curved portions (Z, c, are tilted towards each other, thereby causing the side portions 0, c to be swung correspondingly into closer proximity. By arranging the screws 0 at suitable intervals and forcing them inward- 1y to the necessary extent, the side portions will be adjusted with relation to each other thruont their entire lengths, so.that the extent of frictional engagement thereofwith the glass will be practically uniform and iuav be varied accurately according to couditions. The extent to which the side porlions may be relatively adjusted varies from a position such as is indicated in Fig. 5 to a position in which the base portion is com: pletely flattened against the casing bottom, as indicated in Fig. 6.

On account of the fact that the screws 0 are only inserted at intervals, the tendency to force the side portions together will be somewhat greater close to the screws than midway between them, but the supporting portion 71., which is directly engaged by the screw heads and pressed against the channel bottom, causes the pressure of the screw. heads to be distributed more efi'ectively over the bottom portions between the screws, so that the parallel relation bet ween the headed edges of the side portions will be approximately maintained by the screws, although an intermediate portion of the bot tom may be readily' pounded down, before installation, to force in the side portions if necessary. This may be done by insertinga strip of metal, shaped similarly to the space between the spring members 72, and 2' portions a downwardly.

into this space, and then, by means of a suitable tool, or tools, forcing the bottom -When the'glass plate 1s in position the channel it will be yieldingly engaged at each side by the side portions and at its-edge by the spring strip, so that itrwill be yieldingly supported against movement in all directions, 1' have ascertained that, with the above described 'ponstruction, by form ng the connecting po ftions between the side and bottom ;of the clia nel strip on a gradual curve sufiicient r iliency is. secured, to-

gether with the resiliency of the side portions beyond said connecting portions, to provide asuiiiciently yielding force of engage'ment of the side portions with the glass to makeunnecessarythe yielding end portions for said side portions described in my sardp'atent.

. W1th the above described oonstruction,

' bothjstrips'which make up the complctedeprocess and the two strips may be rapidly vice may-be completely formed by a'rolling connec'ted by a special machine for the puring, portions being inwardly rolled into cylindrical form to form non-yieldable beads'arranged to project towards each other beyondtheir adjacent sides to provide transversely convexguiding faces for the opposite sides of window glass sheets of varying thickness inserted there between.

2. A window glass guide consisting of a F single strip of resilient sheet' metal bent to provide a longitudinal bottom. portion, adapted forattachment to a 'w.indow casing, and a pair of transversely resilient guiding portions. extending convergently therefrom and, having -non-resilient edge portions formed to provide transversely convex engaging. faces for the opposite sides of window g ass Sheets of varying widths inserted therebetween and an independently formed resilient me'talflcushion supported on'said bottom portion between said guiding portions and extending throughout the length of the strip. a

3."l A "window glass channel comprising a resilient sheet metal strip, formed to provide an' intermediate bottom portion, adapted to-b'e secured to a Window casing, and oppositely disposed side portions extending laterally outward therefrom and arranged for yielding engagement with opposite sides of a sheet of glass disposed therebetween,

. and a resilient sheet metalstrip having a longitudinal intermediate bend, to provide a supporting portion and an engaging portion,

said vsupporting portion being mounted on said bottom portion between said side p01 tions in position to hold said engagingportion in yielding engagement with the edge of the glass.

4. A window casing guide for .a slidably arranged to engage the casing and supportthe bottom out of contact therewith, to permit the sides to ,be swung into closer proxiso I mityon the application of pressure to the bottom to flex thesame towards the plane of the bearing-surface of the bearing portions, and ineans'to hold the bottomin outwardly flexed position.

5. In a window casing having a, window glass slidable therein, a guide forthe edge I portion of the glass, comprising a resilient sheet metal strip bent transversely into trough form to provide a bottom, two side portions, and a bearing portion intermediate each side portion and the corresponding adjacent portions of the bottom, said sideportions being yieldingly engaged with opposite sides of the glass, and said bearing por tions being engaged-with the casing and arranged to sustain the bottom out of contact therewith, andattaching means, engaging} the bottom and the casing'and adapted to flex the bottom towards the casing to increase the tension of the side portions on the glass;

6. In combination with a window casing,

having a sheet of glass therein, an elongated strip of resilient sheet metal having two longitudinal bearing portions, arranged in contact with the casing, an intermediate bottom portion held out of contact with the.-

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frame by said bearing portions, and oppositely disposed side portions extending laterally from said bearing portions and yieldin'gly engaged with the opposite sides of the glass, and attaching means extending thru the middle of said bottom portion into the frame, to presssaidbearing portionstherciagainst and spring the bottom portion in: wardly, thereby to increase the tension of engagement of the side portions with the glass.

7. A window casing guide comprising .an

elongated strip of resilient sheet metal bent transversely into trough form, to receive the edge portion of a sheet of window glass and providing, a. transversely and inwardly J curved bottom, side portions for-engaging opposite sides of the glass, and easing engaging portions, connecting said bottom and side portions and curvedilreversely with relation to the curve of the bottom, in combination with means for outwardly flexing the bottom-while the pressure thereon is resisted by, said casing engaging portions, to set the side portions in closer proximity.

S. A window casing guide comprising an elongated strip of resilient sheet metal bent transversely into trough form, to receive the edge portion of a sheet of window glass and providing a transversely and inwardly curved bottom, side portions for engaging opposite sides of the glass, and easing engaging portions, connecting said bottonrand side portions and curved reversely with relation to the curve of the bottom, the middle portion of the bottom being apertured to permit the passage of attaching screws therethrough from within the trough into the casing, to clamp the casing engaging portions thereagainst and outwardly flex the bottom to set the side portions into closer proximity.

9. In combination with a window casing having a sheet of glass therein, a. strip of resilient sheet metal having eonvergently ex tending side portions, arranged foryielding engagement with opposite sides of the glass, convexly curved bearing portions at the base of each side portion, held in engagement with the casing and an intermediate eonnee-ting bottom portion transversely curved outwardly from the casing and held out of contact therewith by said bearing portions, a spring composed of asheet metal strip bent longitudinally to provide a supporting portion arranged on said bottom portion, and an engaging portion arranged for yielding engagement with the edge of the glass, and screws arranged to engage said supporting portion and passing thru the same and said bottom portion, into the casing, to attach the same thereto, and to force the side portions into closer proximity. I

10. A window glass channel comprising a resilient sheet metal strip, formed to provide an intermediate bottom portion, adapted to be. secured to a window casing, and opposite ly disposed side portions extending laterally outward therefrom and arranged for yield tion in yielding engagement with the edge' of the glass, and said bottom and said supporting portions having holes to permit the passage of screw shanks therethrough, to attach the strip to the casing, and said engaging portion being cut away opposite said holes to permit the passage of the screw heads therethrough.

11. A window glass casing guide comprising an elongated strip of resilient sheet metal bent transversely into trough form,

to receive the edge port on of a sheet of glass, and providing a bottom portion having two sides arranged. for yielding engagement with the sides of the glass and a supplemental sheet metal bottom mounted within the guide, coextensive with, and parallel to said bottom portion and yieldingly supported at a distance therefrom in position for sliding engagement with the sheet.

12. A window glass channel comprising a resilient sheet metal strip formed to provide an intermediate bottom portion, adapted to be secured .to a window casing, and oppositely disposed side portions extended laterally outward therefrom and arranged at their edge portions for yielding engagement with opposite sides of a sheet of glass disposed therebetween and a sheet metal spring attached to said strip and extending from one side portion towards the other side portion, out of contact with and in approximately parallcl relation to the bottom portion and thruout the length thereof, in position for yielding engagement with the edge of the glass disposed between said side portions.

In testimony whereof, I have signed my name to this specification.

EDWIN W. M. BAILEY. 

